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WO2007111629A3 - Adaptive synchronization enhancement technique for serial modulated waveforms - Google Patents

Adaptive synchronization enhancement technique for serial modulated waveforms Download PDF

Info

Publication number
WO2007111629A3
WO2007111629A3 PCT/US2006/029148 US2006029148W WO2007111629A3 WO 2007111629 A3 WO2007111629 A3 WO 2007111629A3 US 2006029148 W US2006029148 W US 2006029148W WO 2007111629 A3 WO2007111629 A3 WO 2007111629A3
Authority
WO
WIPO (PCT)
Prior art keywords
sync
enhancement technique
modulated waveforms
adaptive synchronization
peak
Prior art date
Application number
PCT/US2006/029148
Other languages
French (fr)
Other versions
WO2007111629A2 (en
Inventor
Donald John Rasmussen
Original Assignee
Itt Mfg Enterprises Inc
Donald John Rasmussen
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Itt Mfg Enterprises Inc, Donald John Rasmussen filed Critical Itt Mfg Enterprises Inc
Priority to AU2006340851A priority Critical patent/AU2006340851B2/en
Priority to EP06849803.9A priority patent/EP1913705B1/en
Publication of WO2007111629A2 publication Critical patent/WO2007111629A2/en
Publication of WO2007111629A3 publication Critical patent/WO2007111629A3/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L7/00—Arrangements for synchronising receiver with transmitter
    • H04L7/04—Speed or phase control by synchronisation signals
    • H04L7/041—Speed or phase control by synchronisation signals using special codes as synchronising signal
    • H04L7/042—Detectors therefor, e.g. correlators, state machines

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)

Abstract

Methods and apparatus for synchronization (SYNC) detection of a received serial offset quadrature pulse shaped waveform modulated by a symbol SYNC sequence are provided. The waveform is serially demodulated into a serial baseband signal and correlated in parallel with segments of the symbol SYNC sequence. Correlation strength estimates of each of the correlated output signals are computed and used to adjust a SYNC threshold level. The correlation strength estimates or the correlated output signals are combined and a peak is determined in the resulting signal. The peak in the resulting signal is compared to the SYNC threshold level to detect synchronization.
PCT/US2006/029148 2005-07-28 2006-07-28 Adaptive synchronization enhancement technique for serial modulated waveforms WO2007111629A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU2006340851A AU2006340851B2 (en) 2005-07-28 2006-07-28 Adaptive synchronization enhancement technique for serial modulated waveforms
EP06849803.9A EP1913705B1 (en) 2005-07-28 2006-07-28 Adaptive synchronization enhancement technique for serial modulated waveforms

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US70309505P 2005-07-28 2005-07-28
US60/703,095 2005-07-28
US11/314,757 2005-12-21
US11/314,757 US7715505B2 (en) 2005-07-28 2005-12-21 Adaptive synchronization enhancement technique for serial modulated waveforms

Publications (2)

Publication Number Publication Date
WO2007111629A2 WO2007111629A2 (en) 2007-10-04
WO2007111629A3 true WO2007111629A3 (en) 2008-02-14

Family

ID=38527395

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2006/029148 WO2007111629A2 (en) 2005-07-28 2006-07-28 Adaptive synchronization enhancement technique for serial modulated waveforms

Country Status (4)

Country Link
US (1) US7715505B2 (en)
EP (1) EP1913705B1 (en)
AU (1) AU2006340851B2 (en)
WO (1) WO2007111629A2 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7715505B2 (en) * 2005-07-28 2010-05-11 Itt Manufacturing Enterprises, Inc Adaptive synchronization enhancement technique for serial modulated waveforms
US7822100B2 (en) 2005-07-28 2010-10-26 Itt Manufacturing Enterprises, Inc. Phase mapping for QPSK/QBL-MSK waveform
US7801255B2 (en) 2005-07-28 2010-09-21 Itt Manufacturing Enterprises, Inc. Synchronization technique for serial modulated waveforms
US7593454B2 (en) 2005-07-28 2009-09-22 Itt Manufacturing Enterprises, Inc. Enhanced QPSK or DQPSK data demodulation for direct sequence spreading (DSS) system waveforms using orthogonal or near-orthogonal spreading sequences
US9094119B2 (en) * 2011-07-06 2015-07-28 Huei Meng Chang Communications network for retransmission of signals
GB201800101D0 (en) * 2018-01-04 2018-02-21 Nordic Semiconductor Asa Matched-filter radio receiver
CN111064494B (en) * 2019-12-11 2021-04-27 四川九洲电器集团有限责任公司 Demodulation and de-spreading method, system, medium and equipment for MSK spread spectrum receiver
GB202009141D0 (en) * 2020-06-16 2020-07-29 Nordic Semiconductor Asa Demodulating frequency-modulated signals

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Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5579338A (en) * 1992-06-29 1996-11-26 Mitsubishi Denki Kabushiki Kaisha Spread spectrum receiver using partial correlations
US5428647A (en) * 1992-12-07 1995-06-27 Motorola, Inc. Method and apparatus for synchronizing a received signal in a digital radio communication system
DE10249413A1 (en) * 2002-10-23 2004-05-13 Rohde & Schwarz Gmbh & Co. Kg Detecting start of active signal section involves seeking cost function maximum depending on bit or chip offset and frequency offset after carrying out frequency transformation in frequency domain

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
RASMUSSEN D J ET AL: "Serial demodulation of an OQPSK direct sequence spread signal", TACTICAL COMMUNICATIONS CONFERENCE, 1992. VOL. 1 TACTICAL COMMUNICATIONS: TECHNOLOGY IN TRANSITION., PROCEEDINGS OF THE FORT WAYNE, IN, USA 28-30 APRIL 1992, NEW YORK, NY, USA,IEEE, US, 28 April 1992 (1992-04-28), pages 171 - 179, XP010066459, ISBN: 0-7803-0745-3 *

Also Published As

Publication number Publication date
EP1913705A2 (en) 2008-04-23
WO2007111629A2 (en) 2007-10-04
US7715505B2 (en) 2010-05-11
AU2006340851B2 (en) 2010-09-02
EP1913705B1 (en) 2018-09-05
US20090323867A1 (en) 2009-12-31
AU2006340851A1 (en) 2007-10-04

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